Conduit-section for manhole-terminals.



PATENTBD 8133129; 1903.

G. M. GEST. GONDUIT SECTION FOR MANHOLE TERMINALS.

APPLICATION FILED JULY 12, 1902.

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"No. 739,853. PATENTED SEPT. 29, 1903.

G. M. GEST. GONDUIT SECTION FOR'MANHOLE- TERMINALS.

APPLICATION FILED JULY 12. 1902. R0 XODEL. 2 BHBETS-SEEET 2.

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UNITE STATES I I Yatented September 29, 19 08."

GUY M. GES'I, OF CINCINNATI, OHIO.

coununr-sncrroN FOR MANHOLE-TERMINALS.

SPECIFICATION forming part of Letters Patent No. 739,858, datedSeptember 29, 1908.

Application filed July 12, 1902. Serial lie. 115,?11. (No model.)

To all whom'it may concern:

Be it known hat I, GUY 1f. Gus'r, a citizen of the United tates,residing at Cincinnati, in the count-y of Hamilton and State of Ohio,

. have invented certain new and useful Improvements in Conduit-Sectionsfor Manhole- I'erminsls, of which the following is a specitication.

This invention relates to conduit-sections for msnhole-terminals; andits object is to 'provide a conduit-section for electrical coudoctors ofvitrified material and of such form and construction as to adapt it forready connection with a manhole structure.

It is important in joining conduit-sections to manholes to provideflared or ronndedsurfaces at the juncture of the manhole with the conduit,so that the conductor-cables arranged within theconduit maybe passedinto-the man hole without bending them too abruptly, and byprovidiug aterminal connection of the re quired construction in asingle integralsection of vitrified material the work of joining a com duit to amanhole structure is materially lessened and the connection when madepresents smooth rounded surfaces, over which the conductor-cablesincased within the conduit may be bent without injury. It is alsoimportant that the outer surfaces of said sections, including the endsthereof, should be so formed as to contact closely when a plurality arelaid side by side, as shown in Figures 3, 4, and 5,

or in order to be readilybnilt in with masonry,

as shown in Figs. 2 and 5.

With the view of accomplishing this purpose my invention consists of aconduit-sew tion for manhole-terminals of the novel constructionhereinafter fully described in connection with the accompanying drawingsand defined in the appended claims.

In the drawings, Fig. 1 is a view in perspective of a simple embodimentof the invention. Fig. 2 is a central horizontal section of the same.Fig. 3 is a perspective view of a modified construction and arrangementof the improvement. Fig. 4 is a similar view of a further modification,and Fig. 5 is a section entire line 5 5 of Fig. 4.

Corresponding parts in all the figures are denoted by the same referencecharacters' Referring to 1 and 2, the numeral 1 designates theconduit-section, having a central bore 2. for the reception of electricconductors and an enlarged head 3, tapered oneachofitsfouroutersurfaces4. Thesrnaller forming sharp or abrupt bendstherein.

In the modification shown in Fig. 3 the ter minal section comprisestwoverticallydivided'inembers 7 and 8, arranged one upon the other andhaving their meeting ,taces flattened to form a close joint.The-remaining three sides 9 of each member are tapered, and 1 the threeinner walls 10 of the same are outwardly flared, so that when joined,shown in the drawings, the section as a whole pie seats four flared ortapered sides similar to the integral structure shown in Fig. 1.

The modification illustrated in Figs. 4 and 6 embodies the samecharacteristic features as the forms shown in the other figures, thedistinction being that in this modified construction the terminalsection is made up 0! two members arranged side by side in parallelrelation and having their inner meeting faces flat to effect a closejoint. The-other three faces of the members 12 and 13 are flared, andtheir inner walls 14 are correspondingly flared for the purpose named.

It is desirable that the inner curve of the surfaces of the flaredportions of the terminals should commence at and extend from the surfaceof the manholewall inwardly in order to avoid an angular bisection ofsaid wall by said inner curved surface. Therefore I pre for to form theinner curved surfaces, at least approximately, as a quadrant of acircle,the manhole-wall being tangential thereto, and in order to secure such acurve of suitable radial dimensions I construct my terminals withoutwardly-flaring ends, as hereinbefore mentioned.

Flared terminal sections, substantially .roo such as described andembodying my invenl-lOD, may be manufactured in various shapes r andsizes to adapt them to meet varying re- :15 claim and desire to secureby Letters Patentv 1. Aconduit-section formanhole-terminals andcomprising a body which is rectangular in cross-section, and has anoutwardly-flaring :oend which extends transverselyof and beyond thesurface of the body, the inner surface of said end being curvedlongitudinally of the conduit-section.

2. Aoonduit-seot-ion for manhole-terminals, ss comprisiug a body whichis rectangular in 'cross-seetion-aud has an outwsrdiyflaring end portionextending transversely of the body; the inner face of said flaring endform ingasurfaoe cursedlongitudinsllyof thecom duit-seotion. g

3. Acoudriibsection for manhole-terminals and comprising a; body whichis rectangular in cross-section, and has an outwardly-flaring end whichextends transverselyof and beyond the surface of the body, the surfacesof said 35 end being curved longitudinally of the conduit-section, theform of the inner surface of said end being a quadrant.

4. Aconduit-section formanhole-terminals comprising} plurality of.conduits each of 4o which has a body which is rectangular incross-section and having each an outwardly curved or flared flange uponthe edges which form the outer edge of the group of conduitsections.

In testimony whereof I have signed my name in the presences thesubscribing witnesses.

GUY M. GES'1.- Witnesses:

Gnonen minimum, HAT-rm H. TRIPP.

